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Biosorbimento del cromo esavalente e i suoi studi cinetici

Biosorbimento del cromo esavalente e i suoi studi cinetici

          
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About the Book

Il presente lavoro si occupa di rimuovere il Cr (VI) utilizzando il potenziale di biosorbimento della biomassa fungina resistente al cromo Aspergillus fumigatus isolata dall'effluente della conceria. La biomassa fungina secca è stata utilizzata per ottimizzare vari parametri come il tempo di contatto, la concentrazione iniziale di ioni metallici, il pH, il carico di biomassa ecc. È stata studiata la rimozione percentuale di cromo utilizzando vari pretrattamenti chimici. Un massimo del 92,48% di rimozione del Cr (VI) è stato osservato con una concentrazione iniziale di ioni metallici Cr (VI) di 25 mg/L utilizzando la biomassa secca di Aspergillus fumigatus. Una rimozione massima di Cr (VI) del 96,99% è stata ottenuta utilizzando la biomassa fungina drogata con acido nitrico, seguita dal 94,78% di rimozione utilizzando la biomassa fungina pre-trattata con alcali e seguita dal 92,98% di rimozione utilizzando la biomassa fungina drogata con acido solforico a 37°C, pH 2.0 e 150 rpm. Un'ulteriore modellazione dell'equilibrio è stata effettuata utilizzando le isoterme di assorbimento di Langmuir, Freundlich, Dubnin Radushkevich e Tempkin e i dati sono stati adattati. L'isoterma di Freundlich ha mostrato il miglior adattamento con un coefficiente di correlazione di 0,9992. La cinetica del biosorbimento del cromo esavalente è stata valutata rispetto alle equazioni cinetiche del primo e del secondo ordine e sistemata in base alla sua capacità di adsorbimento.


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Product Details
  • ISBN-13: 9786204064826
  • Publisher: Edizioni Sapienza
  • Binding: Paperback
  • Language: Italian
  • Returnable: N
  • Weight: 113 gr
  • ISBN-10: 6204064827
  • Publisher Date: 09 Sep 2021
  • Height: 229 mm
  • No of Pages: 68
  • Spine Width: 4 mm
  • Width: 152 mm


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